3.2
Back-up protection functions
GUID-A8D0852F-807F-4442-8730-E44808E194F0 v13
IEC 61850 or
function name
ANSI
Function description
Line Distance
REL650 (A11)
REL650 (A12)
Current protection
PHPIOC
50
Instantaneous phase overcurrent protection
1
1
OC4PTOC
51_67
1)
Directional phase overcurrent protection, four steps
1
1
EFPIOC
50N
Instantaneous residual overcurrent protection
1
1
EF4PTOC
51N
67N
2)
Directional residual overcurrent protection, four steps
1
1
NS4PTOC
46I2
Four step directional negative phase sequence
overcurrent protection
1
1
SDEPSDE
67N
Sensitive directional residual overcurrent and power
protection
1
LCPTTR
26
Thermal overload protection, one time constant,
Celsius
1
1
LFPTTR
26
Thermal overload protection, one time constant,
Fahrenheit
1
1
CCRBRF
50BF
Breaker failure protection
1
1
CCPDSC
52PD
Pole discordance protection
1
1
VRPVOC
51V
Voltage restrained overcurrent protection
1
Voltage protection
UV2PTUV
27
Two step undervoltage protection
1
1
OV2PTOV
59
Two step overvoltage protection
1
1
ROV2PTOV
59N
Two step residual overvoltage protection
1
1
Frequency protection
SAPTUF
81
Underfrequency protection
1
1
SAPTOF
81
Overfrequency protection
1
1
SAPFRC
81
Rate-of-change of frequency protection
1
1
1) 67 requires voltage
2) 67N requires voltage
Section 3
1MRK 506 383-UEN A
Available functions
24
Line distance protection REL650 2.2 IEC
Commissioning manual
Summary of Contents for REL650 series
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